import math
"""as 
按周期计算收益率
"""
class ror_ln:
    def __init__(self,timeperiod=1):
        self.timeperiod=timeperiod+1
        self.data=[]
        self.timekey = None
    def oncalc(self,d,timekey=None):
        rst=None
        if d is not None:
            if timekey   is not None:
                if timekey == self.timekey:
                    self.data[-1]=d
                else:
                    self.data.append(d)
                    self.timekey=timekey
            else:
                self.data.append(d)
            if len(self.data)>self.timeperiod:
                self.data.pop(0)
            if len(self.data)==self.timeperiod:
                rst=math.log(d)-math.log(self.data[0])
        return rst


if __name__ == '__main__':
    from jili.core import load, save
    from research.calcor.calcors_graph import graph_calcor
    k1m = load(r"D:\data\future_k1m_tq\TA005\TA005_20200102.pkl")
    roc_stat0=ror_ln(timeperiod=5)
    cc = [{'calc_cmd': 'ta', 'cmd': 'EMA', 'out': ['ema30'], 'input': {'price': 'close'}, 'arg': {'timeperiod': 30},
           'batch': 30},
          {'calc_cmd': 'ta', 'cmd': 'EMA', 'out': ['ema10'], 'input': {'price': 'close'}, 'arg': {'timeperiod': 10},
           'batch': 10},
          {'calc_cmd': 'function', 'function': roc_stat0.oncalc, 'out': ['roc_stat0'], 'input': ["ema10","timekey"]}]
    c = graph_calcor(cc)
    k1ms = k1m[:32]
    for t in k1ms:
        t = c.onbar(t)
    print(t)
    t1 = k1m[32]
    t1["timekey"] = t["timekey"]
    t1 = c.onbar(t1)
    print(t1)
    print("end")